Review: A&P Chemistry Part III

Organic molecules or compounds contain both ______ and ______.

• hydrogen and carbon

• oxygen and nitrogen

• sulfur and phosphorus

• calcium and potassium

Which of the following is NOT an example of an organic substance in the body?

• Carbohydrates

• Lipids

• Water

• Proteins

Examples of common inorganic substances are:

• Carbohydrates, lipids, proteins

• Water, oxygen, carbon dioxide, salts

• Nucleic acids, proteins, lipids

• Sugars, starches, fats

What is the most abundant compound in living things and makes up two-thirds of the weight of a human adult?

• Water

• Glucose

• Oxygen

• Carbon dioxide

Why is water important in transporting solutes in the body?

• Because it is the major component of blood and other body fluids.

• Because it is a source of energy for cells.

• Because it acts as a structural protein in tissues.

• Because it provides insulation against heat loss.

What does water absorb and transport throughout the body?

• Heat

• Light

• Sound

• Electricity

Which of the following ions are provided by salts?

• Sodium, chloride, potassium, calcium, magnesium, phosphate, carbonate, bicarbonate, and sulfate

• Glucose, fructose, sucrose

• Oxygen, nitrogen, hydrogen

• None of the above

Electrolytes from salts play important roles in which of the following processes?

• Nerve impulse conduction

• Muscle contraction

• Transport of substances across cell membranes

• All of the above

What is the primary function of carbohydrates in cellular activities?

• Provide genetic information

• Provide energy for cellular activities and materials for synthesizing various cell structures; stored as energy reserves

• Act as enzymes

• Store vitamins

Carbohydrates are composed of which elements?

• Carbon, hydrogen, and oxygen

• Nitrogen, hydrogen, and oxygen

• Carbon, nitrogen, and sulfur

• Oxygen, phosphorus, and hydrogen